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Online since: March 2016
Authors: Masayoshi Umeno, Makoto Takahashi, Ajinkya G. Nene, Koichi Wakita
Size controlled synthesis of Fe3O4 nanoparticles by ascorbic acid mediated reduction of Fe(acac)3 without using capping agent Ajinkya G.
It can be observed that temperature affects on the rate of reduction of Fe(acac)3 by ascorbic acid.
Fig. 5 shows the XRD pattern of the powder sample formed by reduction of Fe(acac)3.
All the peaks in Figure (5) can be indexed as pure Fe3O4 phase with inverse spinel structure and matched well with the reported data (JCPDS:65-3107).
XRD and TEM data shows Fe3O4 nanoparticles of size 15nm±4 nm.
Online since: September 2008
Authors: Jyrki Kullaa
The data before repair include the environmental or operational influences, whereas the data after repair represent the current structural condition.
Introduction Structural health monitoring (SHM) is based on reference data, or training data, collected from the undamaged structure.
Therefore, the test data can also fall beyond the training data, making the estimation more inaccurate.
The training data consist of reference data before and after repair. 6.
This paper introduces a data-based technique to utilize the information from two or more structural conditions in the training data.
Online since: January 2018
Authors: S. Nallusamy, V. Saravanan, K. Balaji
Lead Time Reduction through Execution of Lean Tool for Productivity Enhancement in Small Scale Industries V.
In a gear manufacturing industry, value stream mapping and line balancing were adopted as an idea for reduction of setup time and cycle time.
Fig. 1: Different Phases of SMED Data Collection and Analysis Data collection was carried out in injection moulding machine production process flow setup time.
The time taken for fastening tie bar could be mostly reduced by the proposed design and the time reduction as follows
The net total of 27.05 minutes has been reduced and the percentage of reduction in setup time achieved was 67.72%.
Online since: January 2012
Authors: Fan Feng, Guo Xin Zhang
Stress integral method, overload method and strength reduction method Stress integral method [1, 2].
Strength reduction method [4, 5].
In 1975, the concept of shear strength reduction factor is firstly proposed in geotechnological elastic-plastic finite element analysis by O.C.Zienkiewicz.
Strength reserve coefficient method consider that, it was difficult to accurately determine the material strength parameters of dam body and foundation because of a variety of erratic factors, and it often lack sufficient experimental data and empirical data, resulting in that the actual strength of the material may be lower than the required strength in design standards, while the dam strength parameters may also decline during the long operation period.
It shows the relationship between the strength reduction factor and displacement increment in typical dam site before and after treatment in Fig. 4 (a) and (b) respectively, the general strength reduction safety factor of untreated foundation is 1.9, and the strength reduction safety factor is improved to be 4.2 after reinforcement.
Online since: March 2009
Authors: Mark J. Loboda, Mike F. MacMillan, Gil Yong Chung, Jian Wei Wan
Five 3" epitaxial wafers are tested and 9 data points per wafer are included.
Fig. 3 shows effective recombination lifetime wafer map and line scan data.
Effective recombination lifetime wafer map and line scan data.
Fig. 4 shows PL lifetime and intensity line scan data of the sample in Fig.3.
TR-PL (Time resolved photoluminescence) line scan data from the wafer in Fig 2.
Online since: December 2012
Authors: Guo Dong Wang, Xiao Lin Chen, Bing Xing Wang, Yong Tian, Guo Yuan, Zhao Dong Wang
The industry application shows that the NG-TMCP which is based on the UFC can reduce the alloy content effectively and implement the low-cost reduction produce of high-grade products.
Meawhile, the real time data exchange among the subsystems was achieved by the developed data communication platform.
Based on the primary data input (PDI) parameters, such as the plate chemical composition, the plate physical dimension and so on, the cooling schedule was calculated by the process automatic system of UFC.
Application of the UFC Control System Low-cost reduction produce of X70 was successful implemented in one plate production line based on this UFC system.
Additionally, the alloy reduction job was also carried out in the production of other high-grade steel after the successful reduction produce of X70 by the UFC control system and the significant economic benefits was also achieved, such as X80, X65, Q550D, NM360 and so on.
Online since: January 2014
Authors: Bu Yung Kosasih, Michael Dicker
All the lift data for all outputs is plotted as a 3D mesh (Figure 2.b), and similar for drag.
The wind speed data is fed into a Blade Element Momentum (BEM) program to determine the aerodynamic loads on the blade.
The Inverse Discrete Fourier Transform of the frequency data is then found to generate discrete time series data at each point.
There are three main inputs to the BEM calculation namely: wind field, blade geometry and aerofoil data.
The lift and drag data for the inner sections of the blade (cylinders and DU foils) are taken from Ref. [3].
Online since: February 2014
Authors: In Kyu Kwon
Mechanical data for SS 400 and SM 490 at high temperature are shown in Table 1 and regressive equation of linear expansion coefficients and specific heat are shown Table 2 and Table 3.
The reduction ratio versus standard fire curve was decreased constantly from room temperature until 900 ℃.
As the grade of structural steel increases, the differences of reduction ratio of an allowable stress at high temeprature showed eminent.
(2) H-section made of SM 490 showed a slight difference of reduction ratio of an allowable stress at high temperature.
(3) H-section made of SS 400 represented an unchanged reduction ratio of an allowable stress during standard fire curve
Online since: September 2016
Authors: T.R. Stepanova, T.V. Prokhorova
Constitutive equation parameters were determined using experimental data of smooth specimens.
- Identification of material parameters in constitutive equations based on experimental data
Materials In present work experimental data for X10CrMoVNb-9-1 steel tested at 625 oC were used [6].
It should be noted that the experimental data should be taken in whole transition region of failure strain.
Creep curves of steel P91, T=625˚C: smooth lines – calculation results, dotted lines – experimental data [7].
Online since: August 2013
Authors: Chanikarn Yimprayoon
Electricity consumption and peak demand reduction in commercial buildings was not high.
Bangkok weather data was used in the simulation.
Lighting Power Density (LPD): 30% reduction. 9.
· HVAC system efficiency factor: SEER = 14 · Lower LPD at 30% reduction and high efficient appliances at 18 W.m-2.
These data can be used as guidelines for energy efficient design measures selection for each building type to meet different goals.
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